More recently you’ve heard charges — especially from teachers union officials who despise union-free charters — that charters schools aren’t doing well. There are 29 open-admissions high schools in Boston. Charters were ranked #1, #2, #3, #4, and #9 out of 29 on MCAS proficiency.
Massachusetts is considering evaluating schools by a “Value-Add” system pioneered in Tennessee and Minnesota, that measures improvement.
Wellesley High gets to say it’s amazing because it happens to have kids who show up with huge MCAS scores, despite the fact that their MCAS proficiency gap (white+Asian compared to black+Hispanic) that exceeds 50 percentage points. And without Value-Add, Hyde Park High will continue to be excoriated, because it serves kids who show up with failing scores, instead of accounting for how much improvement they make.
Value-Add could answer which schools help kids the most, Goldstein writes.